Minification and uglification are techniques to make your JavaScript files smaller, and sometimes obfuscate the code, so it's harder to read. This can lead to faster load times and a little extra security through obscurity.

Minification is the practice of removing all unnecessary characters from code without changing its functionality.
This includes removing all unnecessary whitespace, newlines, comments, etc.

https://terser.org/ is a popular tool for minifying modern JavaScript files. Here's an example of how you could use it: